Process of painting.



N. B. GREGG.

- PROCESS OF PAINTING.

11111111111111111111111111 o. 1,017,410. V Patented Feb. 13,1912. Fig. 1.

1 4 1 I I r UNITED STATES PATENT orricE.

NORRIS B. GREGG, OF ST. LOUIS, MISSOURI.

PROCESS OF PAINTING.

To all whom it may concern:

Be it known that I, Norms l3. GREGG, a citizen of the United States, residing at the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Processes of Painting, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention consists in an improvement in the art of painting, consisting in the preparation of the surface of the object to be painted, so as to cause the paint to adhere better thereto.

The invention, generally stated, consists in piercing the outer skin or surface of the body to be painted, so as to allow the paint to penetrate into the interior of the object painted. Whether or not such object has been previously painted, the piercing of perforations through its outer surface results in allowing the paint to penetrate into the body with the improved result above stated. If the object to be painted retains a former coat of paint, or part thereof, such paint sometimes scales off and carries with it the new paint, but when said old coat of paint is pierced by perforations there through, said perforations continuing into the body painted, the fresh paint passes through the old coat of paint and dries in the perforations in said body, and is efiectually held thereon in such manner as to render the tendency of the old paint to scale of no importance. Moreover, the perforation of the body to be painted, in the manner stated, enables the exercise of capillary attraction by the material of said body, the liquid paint being thereby drawn into said material and caused to spread out from the side and ends of said perforations. The process may be carried out most successfully where the body to be treated is constructed of wood, or is provided with a wooden surface, and the process is, in fact, designed primarily for application in such connection, althoughbodies of other material than wood possessing a comparatively high degree of porosity may be treated in the manner above described, as will be understood.

Merely for the sake of example, a drawing forms part of this specification, in which like numbers of reference denote like parts wherever they occur, and in which Figure 1 is a sectional view through a Specification of Letters Patent.

Application filed Il'uly 11, 1910.

Patented Feb. 13, 1912.

Serial No. 571,260.

body to which paint has been applied by this improved process, showing one form of perforation or indentation of the object that receives the paint; Fig. 2 depicts another form of such perforation or indentation; and Fig. 3 illustrates a third form of such perforation or indentation.

The paint 1 may be applied in any desired manner, as, for instance, by the use of brushes. The wood forming the surface 2 to be painted is, in the drawings, illustrated as having thereon a sizing, consisting of a former coat of paint 3. A sized surface can not hold a coat of paint so well as an unsized surface, because the sizing prevents the liquid paint from flowing into the pores and crevices of the wall or other surface to be painted, and, moreover, prevents the material of such object from exercising capillary attraction upon the fresh paint. A coat of old paint on its surface is like a sizing The present invention is especially useful in the application of fresh paint to an object that has been formerly painted or to any surface having a smooth finish, yet it produces an important improvement with respect to the degree of strength with which the paint adheres to the object in the case of unsized walls or other surfaces.

It is a matter of choice as to what means shall be used to indent or perforate the object to be painted, as above stated and for the purposes hereinbefore set forth. In principle, such indentations or perforation may be produced by hand by mere pin pricks or the like. Preferably, however, some kind of device, such as a roller or hammer covered with sharp points or sharp blades or serrations will be used for this purpose.

Fig. 1 of the drawings shows a surface prepared by the use of a roller or hammer provided with sharp points; Fig. 2 shows such surface prepared with knife blades; and Fig. 3 shows such a surface perforated or indented by serrations. It is to be understood that other forms of indentations or perforations of the surface and object to be painted may be produced, and that the means for preparing the surface to be painted may be various or of any kind, and that the suggestions made above are merely by way of illustration. It should, furthermore, be understood that although the drawings show the wall 2 coated with old paint 8, yet, as above stated, this process of painting, consisting of first preparing the surface of the object to be painted, by making indentations or perforations therein, is advantageous in connection with material that has not previously been treated.

\Vhen perforations or indentations 4 have been made into the wall 2 or other object to be painted, the liquid fresh paint 1 runs into same, and, if that were all, the cohesion of the paint 1 to the wall 2 would far surpass that on surfaces not similarly prepared, but in addition to such improvement, the capillary action of the material composing the wall 2, which material is preferably wood, although sometimes of other porous substances results in the fresh liquid paint spreading through the pores of the wall 2 as at 5, thus having the clamping effect to hold the coat of paint 1 upon the object of an up set rivet or a clenched nail, thus most firmly binding the coat of paint 1 to the surface to which same is applied.

lVhile the size of the perforations or indentations in the drawings is exaggerated, it will be readily appreciated that same can be made of any size suitable or desired, so as to combine effectiveness and non-interference with the appearance of the wall or other object. Any number of perforations may be made, but for the best results said perforations should be made in considerable numhers.

I claim:

The process of painting wooden objects having a previously painted surface, which consists in indenting the object to be painted to produce a series of openings extending through the old coat of paint and a series of paint-receiving pockets extending into the body of the object itself, said openings leading directly into said pockets, and in subse quently applying a fresh coat of liquid paint to the surface of the old coat to cause the fresh paint to fill said openings and said pockets and to spread in the latter by capil lary attraction, the paint occupying said pockets forming anchors connected integrally with the body of the fresh coat by the webs produced by the paint occupying said openings.

In testimony whereof I have hereunto affixed my signature in the presence of two witnesses.

NORRIS B. GREGG.

Witnesses GLAnYs WVALTON, Gnonon G. ANDERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

